Grease-gun



H. S. STANSBURY.

GREASE GUN.

APPLICATION FILED JUNE 26, 1919.

Patented Feb. 10, 1920.

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GREASE-GUN.

Application filed June 26, 1M5}. serial nagggbsq.

barrel having a filling slot, and surrounded by a sleeve, and has for one of its ob ects the provision of means for drawing the barrel within the sleeve by the piston and its handle, so that the parts of the device will be positioned to discharge the grease on pushing the handle of the piston.

Another object of this invention is the provision of means in the sleeve adapted to close the filling slot in the barrel and prevent the grease from working behind the piston when the barrel is drawn in the sleeve.

A further object of this invention is the provision of a grease gun of the abovestated character, which will be simple, durable and efficient, and which may be manufactured and sold at a comparatively low cost.

ith these and other objects in view, as will become more apparent as the description proceeds, the invention consists in certain novel features of construction, combination and arrangement of parts as will be hereinafter more fully described and claimed.

For a complete understanding of my invention, reference will be had to the following description and accompanying drawing,

. in which Figure 1 is a side elevation, partly in section, of a grease gun constructed in accordance with my invention, and illustrating the barrel extended eXteriorly of the sleeve ready to receive the grease.

Fig. 2 is a vertical sectional View of the grease gun in position ready to discharge the grease.

Fig. 3 is a transverse sectional View, taken on the line 3-3 of Fig. 2.

Fig. lv isa similar view, taken on the line we lie 2 Referring in detail to the drawing, the numeral 1 indicates a barrel, having a longitudinally filling slot 2. One end of the barrel 1 has secured thereto anozzle 3, pro vided with screw threads 4: for receiving a tube or pipe to permit the same to be readily inserted within the opening of a bearing or other device to be lubricated. The band 4: surrounds this end of the barrel to reinforce the same and is located within the nozzle and secured thereto and to the barrel. The other end of the barrel 1 has secured therein a combined reinforcing ring and stop The barrel 2 is surrounded by a sliding sleeve 6, having one of its ends closed by a cap 7, provided with an opening to receive a piston rod 8. The piston rod 8 has a handle- 9 formed upon its outer end, while its inner endv has secured thereto a piston 10. Thepiston 10 is located within the barrel 2 in advance of the combined reinforcing ring and stop 5, and consists of a metallic plate 11 and a pair of disks l2, constructed of leather or other material suitable for the purpose.

A closure strip 13 is secured to the inner face of the sleeve 6' adjacent each end thereof, and is slightly offset from the inner face thereof so that the same will slide into the filling slot 2 when the barrel is moved within the sleeve, thereby closing the filling slot. The closure strip 13 is of such a width that when disposed within the slot 2 it engages the walls thereof and prevents grease from escaping from the barrel and behind the piston.

In operation the barrel 1 is extended outwardly of the sleeve 6, as illustrated in Fig. 1, and is filled'with grease through the filling slot 2. The operator then pulls upon the handle 9, drawing the barrel 2 withinthc sleeve to a position occupied as illustrated in Fig. 2. As the barrel moves within the sleeve, the closure strip 18 closes the filling slot 2 and prevents grease from escaping therefrom and also working behind the pisston. The device is then ready to discharge the lubricant by shoving the piston forwardly in the usual manner.

While I have shown and described the preferred embodiment of my invention, it

Patented Feb. 10, 1920,

Will be understood that minor changes in construction, combination and arrangement of parts may be made Without departing from the spirit and scope of the invention as claimed.

Having thus described my invention,what I claim is:

A grease gun comprising a cylindrical barrel having a longitudinally extending filling slot, a nozzle secured to one end of the barrel, a combined stop and reinforcing ring secured in the other end of the barrel, a cylindrical sleeve having one end closed and slidably receiving the barrel, a piston in said barrel, a rod connected to the piston and extending through the sleeve and the closed end thereof, and a closure strip secured to the inner face of the sleeve adja cent each end thereof and adapted to close- HARRY S. STANSBURY.

Witnesses:

W. GILL PRIEST, WILLIAM GRAsoN, C. MARLEY HIPSLEY. 

